<template>
    <div id="myList" class="myList">
        <ul>
            <div v-for="(item,index) in list" :key="item.product_id">
                <!--showLength为展示的产品个数-->
                <li v-show="index<showLength">
                    <el-popover placement="top">
                        <p>确定删除吗？</p>
                        <div style="text-align: right; margin: 10px 0 0">
                            <el-button type="primary" size="mini" @click="deleteCollect(item.product_id)">确定</el-button>
                        </div>
                        <i class="el-icon-close delete" slot="reference" v-show="isDelete"></i>
                    </el-popover>
                    <router-link :to="{ path: 'goods/details',query: {productID:item.product_id}}" @click="routerRefresh">
                        <img :src="$target +item.product_picture" alt />
                        <h2>{{item.product_name}}</h2>
                        <h3>{{item.product_title}}</h3>
                        <p>
                            <span>{{item.product_selling_price}}元</span>
                            <span
                                    v-show="item.product_price != item.product_selling_price"
                                    class="del"
                            >{{item.product_price}}元</span>
                        </p>
                    </router-link>
                </li>
            </div>

            <li v-show="isMore && list.length>1" id="more">
                <router-link :to="{ path: '/goods', query: {categoryID:categoryID} }">
                    浏览更多
                    <i class="el-icon-d-arrow-right"></i>
                </router-link>
            </li>
        </ul>
    </div>

</template>

<script>
    export default {
        name: "MyList",
        // list为父组件传过来的商品列表
        // isMore为是否显示“浏览更多”
        // showLength为父组件传过来的展示的产品个数
        props: ["list", "isMore", "isDelete","showLength"],
        data() {
            return {};
        },
        computed: {
            // 通过list获取当前显示的商品的分类ID，用于“浏览更多”链接的参数
            categoryID: function() {
                let categoryID = [];
                if (this.list != "") {
                    for (let i = 0; i < this.list; i++) {
                        const id = this.list[i].category_id;
                        if (!categoryID.includes(id)) {
                            categoryID.push(id);
                        }
                    }
                }
                return categoryID;
            }
        },
        methods: {
            /*来摧毁<router-link>，然后再重新创建<router-link>起到刷新页面的效果*/
            routerRefresh(){
                this.setRouterAlive(false);
                this.$nextTick(()=>{
                    this.setRouterAlive(true);
                });
            },
            deleteCollect(product_id) {
                this.$axios
                    .post("collect/deleteCollect", {
                        user_id: this.$store.getters.getUser.user_id,
                        product_id: product_id
                    },{withCredentials : true})
                    .then(res => {
                        switch (res.data.code) {
                            case "001":
                                // 删除成功
                                // 删除删除列表中的该商品信息
                                for (let i = 0; i < this.list.length; i++) {
                                    const temp = this.list[i];
                                    if (temp.product_id == product_id) {
                                        this.list.splice(i, 1);
                                    }
                                }
                                // 提示删除成功信息
                                this.notifySucceed(res.data.msg);
                                break;
                            default:
                                // 提示删除失败信息
                                this.notifyError(res.data.msg);
                        }
                    })
                    .catch(err => {
                        return Promise.reject(err);
                    });
            }
        }
    };
</script>

<style scoped>
    .myList ul li {
        z-index: 1;
        float: left;
        width: 234px;
        height: 280px;
        padding: 10px 0;
        margin: 0 0 14.5px 13.7px;
        background-color: white;
        -webkit-transition: all 0.2s linear;
        transition: all 0.2s linear;
        position: relative;
    }
    .myList ul li:hover {
        z-index: 2;
        -webkit-box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        -webkit-transform: translate3d(0, -2px, 0);
        transform: translate3d(0, -2px, 0);
    }
    .myList ul li img {
        display: block;
        width: 160px;
        height: 160px;
        background: url(../assets/imgs/placeholder.png) no-repeat 50%;
        margin: 0 auto;
    }
    .myList ul li h2 {
        margin: 25px 10px 0;
        font-size: 14px;
        font-weight: 400;
        color: #333;
        text-align: center;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
    }
    .myList ul li h3 {
        margin: 5px 10px;
        height: 18px;
        font-size: 12px;
        font-weight: 400;
        color: #b0b0b0;
        text-align: center;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
    }
    .myList ul li p {
        margin: 10px 10px 10px;
        text-align: center;
        color: #ff6700;
    }
    .myList ul li p .del {
        margin-left: 0.5em;
        color: #b0b0b0;
        text-decoration: line-through;
    }
    .myList #more {
        text-align: center;
        line-height: 280px;
    }
    .myList #more a {
        font-size: 18px;
        color: #333;
    }
    .myList #more a:hover {
        color: #ff6700;
    }
    .myList ul li .delete {
        position: absolute;
        top: 10px;
        right: 10px;
        display: none;
    }
    .myList ul li:hover .delete {
        display: block
    }
    .myList ul li .delete:hover {
        color: #ff6700;
    }
</style>